Flare premixed combined burner

Abstract

The flare premixed combined burner comprises: a mixing cylinder, the bottom of which is provided with an air inlet; an external exhaust gas exhaust gas system, the external exhaust gas exhaust gas system is used to provide exhaust gas exhaust gas to the outside of the mixing cylinder; an external steam system, the external steam system is used to provide steam to the gas outlet of the external exhaust gas exhaust gas system; an internal exhaust gas exhaust gas system, the internal exhaust gas exhaust gas system is used to provide exhaust gas exhaust gas to the inside of the mixing cylinder; an internal center steam system, the internal center steam system is used to provide steam to the gas outlet of the internal exhaust gas exhaust gas system; a swirl steam system, the swirl steam system is used to provide swirl steam to the inside of the mixing cylinder. The flare premixed combined burner involved in the present invention has the technical characteristics of saving energy, reducing operating costs, and reducing emissions of harmful combustion products such as carbon dioxide and nitrogen oxides.

Description

Technical Field

[0001] The invention belongs to the technical field of waste gas treatment of chemical plants, and more specifically, relates to a torch premixing combined burner. Background Art

[0002] In petrochemical, coal chemical and other chemical plants, a large amount of harmful combustible waste gas is generated during the production process. The gas is discharged into the atmosphere after being burned by an open flare device or a closed ground flare device. Since the burners of the current open flares and closed ground flares do not burn completely during the combustion process, a large amount of black smoke is produced during the combustion process, and a large amount of carbon dioxide and other harmful gases are produced, causing serious pollution to the environment; the combustion flame is long and the flame rigidity is poor, causing the inside of the combustion tower to burn out, the flame to burst, the steam consumption, the small burner processing capacity, etc., resulting in many problems such as large footprint, high investment cost, and high operating cost.

[0003] Therefore, a new type of burner is expected to effectively solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide a torch premixed combined burner which has the characteristics of short combustion flame, good rigidity and low investment cost.

[0005] In order to achieve the above object, the present invention provides a torch premixed combined burner, comprising:

[0006] A mixing cylinder, wherein an air inlet is provided at the bottom of the mixing cylinder;

[0007] An external exhaust gas fuel gas system, the external exhaust gas fuel gas system is used to provide exhaust gas fuel gas to the outside of the mixing cylinder;

[0008] An external steam system, the external steam system is used to provide steam to the gas outlet of the external exhaust gas system;

[0009] An internal exhaust gas fuel gas system, the internal exhaust gas fuel gas system is used to provide exhaust gas fuel gas to the interior of the mixing cylinder;

[0010] An internal central steam system, the internal central steam system is used to provide steam to the gas ejection point of the internal exhaust gas system;

[0011] A swirl steam system is used to provide swirl steam to the interior of the mixing cylinder.

[0012] Preferably, the internal exhaust gas system comprises:

[0013] An exhaust gas pipe, one end of which passes through the side wall of the mixing cylinder to the interior thereof, and the other end of which is provided with an exhaust gas discharge inlet, which is connected to the first exhaust gas pipeline;

[0014] An inner double fuel gas annular pipe, the inner double fuel gas annular pipe is located at the inner lower part of the mixing cylinder and is connected to the one end of the exhaust gas pipe;

[0015] A plurality of internal gas nozzles are evenly distributed on the inner double gas ring pipe along a circumferential direction.

[0016] Preferably, the external exhaust gas system comprises:

[0017] An outer gas ring pipe, which is sleeved on the top of the mixing cylinder and is connected to a second exhaust gas pipeline;

[0018] A plurality of external gas branch pipes, wherein the axial direction of the plurality of external gas branch pipes is perpendicular to the axial direction of the mixing cylinder, the plurality of external gas branch pipes are evenly connected to the external gas ring pipe along the circumferential direction, and each of the external gas branch pipes is provided with a plurality of external premixed gas burners.

[0019] Preferably, the external premixed gas burner comprises a gas nozzle and a premixed burner shell, the premixed burner shell is covered on the gas nozzle, the gas nozzle is connected to the external gas branch pipe, a mixed gas outlet is provided on the top of the premixed burner shell, a plurality of nozzle side air inlets are provided on the side wall of the premixed burner shell, and a plurality of nozzle bottom air inlets are provided on the bottom wall.

[0020] Preferably, the external steam system comprises:

[0021] An external steam ring pipe, the external steam ring pipe is sleeved on the mixing cylinder, the external steam ring pipe is provided with an external steam inlet, and the external steam inlet is communicated with the first steam pipeline;

[0022] A plurality of external steam branch pipes are provided, wherein the axial direction of the plurality of external steam branch pipes is arranged along the radial direction of the mixing cylinder, the plurality of external steam branch pipes are evenly connected to the external steam ring pipe along the circumferential direction, and each of the external steam branch pipes is provided with a plurality of external steam spray holes.

[0023] Preferably, the internal central steam system comprises:

[0024] A steam pipe, one end of which passes through the air inlet to the lower part of the mixing cylinder, and the other end of which is provided with a steam inlet, which is connected to a third steam pipeline;

[0025] An internal three-pronged steam pipe, wherein the internal three-pronged steam pipe is arranged at one end of the steam pipe, a liquid nozzle is arranged at the center of the three-pronged steam pipe, and a plurality of internal steam spray holes are arranged on the three-pronged steam pipe in the temple.

[0026] Preferably, the internal steam system further comprises a liquid high pressure interface, and the liquid high pressure interface is detachably connected to the liquid nozzle and to the high pressure liquid pipeline.

[0027] Preferably, the cyclone steam system comprises:

[0028] A swirl steam annular pipe, wherein the swirl steam annular pipe is sleeved on the lower section of the mixing cylinder, a swirl steam inlet is provided at the bottom of the swirl steam annular pipe, and the swirl steam inlet is connected to the second steam pipeline;

[0029] A plurality of swirl steam nozzles, wherein the plurality of swirl steam nozzles are evenly distributed on the swirl steam ring tube;

[0030] A plurality of venturi mixing tubes, one end of each of the venturi mixing tubes passes through the side wall of the mixing cylinder to the interior, and the other end of each of the venturi mixing tubes is connected to one of the swirl steam nozzles.

[0031] Preferably, the axial direction of each Venturi mixing tube forms a first angle with the axial direction of the mixing cylinder, and the first angle is 10° to 85°; the axial direction of each Venturi mixing tube forms a second angle with the horizontal direction, and the second angle is 10° to 85°.

[0032] Preferably, a swirl plate is provided between each two adjacent venturi mixing tubes, and the swirl plate is connected to the inner wall of the mixing cylinder;

[0033] The swirl blade forms a third angle with the axial direction of the mixing cylinder, the third angle is 10° to 85°, and forms a fourth angle with the horizontal direction, the fourth angle is 10° to 85°.

[0034] The present invention relates to a torch premixed combined burner, which has the following beneficial effects: when treating exhaust gas / liquid of different components by burning, different burners are used to burn exhaust gas of different components / different pressures, and steam is controlled through pipelines for exhaust gas of different components; high calorific value combustible gas is used to burn the gas of low calorific value and difficult to control; high pressure exhaust gas or steam is used, and the gas ejected at high speed inhales a large amount of air to participate in combustion; a venturi mixing tube nozzle is used to inject a large amount of air into the exhaust gas to accelerate combustion, reduce flame length, and increase flame rigidity; reduce the use of other fuels for mixing when burning harmful gases; the combustible liquid is sprayed into the mixing chamber through atomization by the nozzle, and the atomized combustible liquid droplets are instantly ignited at high temperature through the high temperature generated by the combustion of the easily controllable combustible gas, and mixed and burned in the high temperature area. It has the technical characteristics of saving energy, operating costs, and reducing the emission of harmful combustion products such as carbon dioxide and nitrogen oxides.

[0035] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The above and other objects, features and advantages of the present invention will become more apparent through a more detailed description of exemplary embodiments of the present invention in conjunction with the accompanying drawings, wherein like reference numerals generally represent like components throughout the exemplary embodiments of the present invention.

[0037] Figure 1 A schematic structural diagram of a flare premixed combined burner according to an exemplary embodiment of the present invention is shown;

[0038] Figure 2 A top view of a flare premixed combustor is shown according to an exemplary embodiment of the present invention;

[0039] Figure 3 A schematic diagram showing the structure of a flare premixed combined burner excluding the external steam system of an exemplary embodiment of the present invention

[0040] Figure 4 A top view of a flare premixed combustor excluding a portion of an external steam system according to an exemplary embodiment of the present invention;

[0041] Figure 5 A schematic diagram showing the structure of an external premixed gas burner in a flare premixed combined burner according to an exemplary embodiment of the present invention is shown;

[0042] Description of reference numerals:

[0043] 1 Liquid high pressure interface, 2 Air inlet, 3 Swirl steam inlet, 4 Swirl steam ring pipe, 5 Swirl steam nozzle, 6 Venturi mixing tube, 7 Exhaust gas inlet, 8 Steam inlet, 9 Mixing cylinder, 10 External gas ring pipe, 11 External gas branch pipe, 12 External premixed gas burner, 13 External exhaust gas gas system, 14 Internal double gas ring pipe, 15 Internal gas nozzle, 16 Liquid nozzle, 17 Internal three-pronged steam pipe, 18 Internal steam spray hole, 19 External steam system, 20 External steam ring pipe, 21 External steam branch pipe, 22 External steam spray hole, 23 Nozzle bottom air inlet, 24 Premixed burner shell, 25 Nozzle side air inlet, 26 Gas nozzle, 27 Mixed gas outlet, 28 Swirl sheet. DETAILED DESCRIPTION

[0044] The preferred embodiments of the present invention will be described in more detail below. Although the preferred embodiments of the present invention are described below, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0045] In order to solve the problems existing in the prior art, the present invention provides a torch premixed combined burner, comprising:

[0046] A mixing cylinder, wherein an air inlet is provided at the bottom of the mixing cylinder;

[0047] An external exhaust gas fuel gas system is used to provide exhaust gas fuel gas to the outside of the mixing cylinder;

[0048] An external steam system, which is used to provide steam to the gas outlet of the external exhaust gas system;

[0049] An internal exhaust gas fuel gas system, the internal exhaust gas fuel gas system is used to provide exhaust gas fuel gas to the interior of the mixing cylinder;

[0050] Internal central steam system, the internal steam system is used to provide steam to the gas outlet of the internal exhaust gas system;

[0051] The swirl steam system is used to provide swirl steam to the inside of the mixing cylinder.

[0052] The torch premixed combined burner involved in the present invention, when burning and treating exhaust gas / liquid of different components, burns and treats exhaust gas of different components / different pressures by using different burners, and controls steam for exhaust gas of different components through pipelines; uses the advantages of high calorific value combustible gas that is easy to burn and easy to control, and burns the exhaust gas of low calorific value that is difficult to control; uses high pressure exhaust gas or steam, and the gas ejected at high speed inhales a large amount of air to participate in combustion; uses a venturi mixing tube to draw a large amount of air into the exhaust gas to accelerate combustion, reduce flame length, and increase flame rigidity; reduces the use of other fuels for mixing when burning harmful gases; sprays the combustible liquid into the mixing chamber through a nozzle, and instantly ignites the atomized combustible liquid droplets at high temperature through the high temperature generated by the combustion of the easily controllable combustible gas, and burns mixedly in the high temperature area. It has the technical characteristics of saving energy, operating costs, and reducing the emission of harmful combustion products such as carbon dioxide and nitrogen oxides.

[0053] Preferably, the internal exhaust gas system comprises:

[0054] An exhaust gas pipe, one end of which passes through the side wall of the mixing cylinder to the interior thereof, and the other end of which is provided with an exhaust gas discharge inlet, which is connected to a first exhaust gas discharge pipeline, and the first exhaust gas discharge pipeline is provided with a control valve;

[0055] An inner double fuel gas annular pipe, which is located at the inner lower part of the mixing cylinder and is connected to one end of the exhaust gas pipe;

[0056] A plurality of internal gas nozzles are evenly distributed on the inner double gas ring pipe along the circumferential direction.

[0057] The exhaust gas generated in the production, that is, the combustible gas, enters the first exhaust gas pipeline, and enters the exhaust gas pipe and the inner double gas ring pipe in sequence through the exhaust gas inlet, and is sprayed into the mixing cylinder through the internal gas nozzle to burn inside the mixing cylinder.

[0058] Preferably, the height of the inner dual fuel gas ring pipe inside the mixing cylinder does not exceed one half of the height of the mixing cylinder.

[0059] Preferably, the external exhaust gas system comprises:

[0060] An outer gas ring pipe, which is sleeved on the top of the mixing cylinder and connected to a second exhaust gas discharge pipeline, wherein the second exhaust gas discharge pipeline is provided with a control valve;

[0061] A plurality of external gas branch pipes are provided, the axes of which are perpendicular to the axis of the mixing cylinder, and the plurality of external gas branch pipes are evenly connected to the external gas ring pipe along the circumferential direction, and each external gas branch pipe is provided with a plurality of external premixed gas burners.

[0062] The combustible gas enters the second exhaust gas pipeline, and then enters the outer gas ring pipe and the outer gas branch pipe in sequence, and is sprayed upward through the external premixed gas burner to burn above the mixing cylinder.

[0063] Preferably, the external premix gas burner is a premix gas burner.

[0064] Preferably, the external premixed gas burner comprises a gas nozzle and a premixed burner shell, the premixed burner shell is covered on the gas nozzle, the gas nozzle is connected to the external gas branch pipe, the top of the premixed burner shell is provided with a mixed gas outlet, the side wall of the premixed burner shell is provided with a plurality of nozzle side air inlets, and the bottom wall is provided with a plurality of nozzle bottom air inlets. The external premixed gas burner inhales air through the nozzle side air inlet and the nozzle bottom air inlet, mixes with the combustible gas and sprays out for combustion, so that the combustion is more complete.

[0065] Preferably, the external steam system comprises:

[0066] An external steam ring pipe, which is sleeved on the mixing cylinder and is provided with an external steam inlet, which is communicated with the first steam pipeline;

[0067] A plurality of external steam branch pipes, wherein the axial direction of the plurality of external steam branch pipes is arranged along the radial direction of the mixing cylinder, the plurality of external steam branch pipes are evenly connected to the external steam ring pipe along the circumferential direction, and each external steam branch pipe is provided with a plurality of external steam spray holes;

[0068] The steam of the first steam pipe enters the external steam ring pipe from the external steam inlet, and is ejected from the external steam nozzle through multiple external steam branches. The external steam inlet is connected to the first steam pipe to allow steam to enter. When the steam is ejected, a large amount of air is sucked in to participate in the combustion of the exhaust gas ejected from the external premixed gas burner, that is, the combustible gas, to avoid the generation of black smoke. The steam is ejected upward from the external steam nozzle, and the air flows from top to bottom and from all sides along the direction of steam injection, which is consistent with the direction of the combustible gas ejected upward. The external steam system is used to promote the combustion of the exhaust gas with a high carbon content, that is, the combustible gas, increase the upward steam, increase the amount of air, and avoid the generation of black smoke during combustion.

[0069] Preferably, a control valve is provided on the first steam pipeline to control the speed of the steam.

[0070] Preferably, the air inlet is a conical or cylindrical rotating wall, and is fixedly connected to the mixing cylinder by welding.

[0071] Preferably, the internal central steam system comprises:

[0072] A steam pipe, one end of which passes through the air inlet to the lower part of the mixing cylinder, and the other end of which is provided with a steam inlet, which is connected to a third steam pipeline;

[0073] An internal three-pronged steam pipe is arranged at one end of the steam pipe, a liquid nozzle is arranged at the center of the internal three-pronged steam pipe, and a plurality of internal steam spray holes are arranged on the internal three-pronged steam pipe.

[0074] The third steam pipe is used to introduce high-pressure steam or discharge high-pressure exhaust gas. The high-pressure steam or the discharged high-pressure exhaust gas enters the steam pipe and the internal three-pronged steam pipe in sequence through the steam inlet, and is ejected through the internal steam nozzle. When the internal steam nozzle ejects high-pressure steam or the discharged high-pressure exhaust gas, the air inlet inhales a large amount of air into the mixing cylinder by increasing the air circulation pressure, and participates in the combustion of the combustible gas ejected from the internal gas nozzle.

[0075] Preferably, the third steam pipeline is provided with a control valve to control the flow rate of the high-pressure steam or high-pressure exhaust gas and the amount of air inhaled.

[0076] Preferably, the internal central steam system also includes a liquid high pressure interface, which is detachably connected to the liquid nozzle and to the high pressure liquid pipeline. The high pressure liquid pipeline is used to introduce flammable or non-flammable high pressure liquid, which enters the liquid high pressure interface and is sprayed out by the liquid nozzle, and a large amount of air is sucked into the mixing cylinder from the air inlet at the bottom of the mixing cylinder, and ignited through the internal exhaust gas system to promote the combustion of the combustible gas; the liquid nozzle is a prior art, which uses mechanical pressure atomization to spray upward flammable or non-flammable liquid droplets.

[0077] Preferably, the cyclone steam system comprises:

[0078] A swirl steam annular pipe, the swirl steam annular pipe is sleeved on the lower section of the mixing cylinder, a swirl steam inlet is provided at the bottom of the swirl steam annular pipe, and the swirl steam inlet is connected to the second steam pipeline;

[0079] A plurality of swirl steam nozzles, wherein the plurality of swirl steam nozzles are evenly distributed on the swirl steam ring pipe;

[0080] A plurality of venturi mixing tubes are provided, one end of each venturi mixing tube passes through the side wall of the mixing cylinder to the interior, and the other end of each venturi mixing tube is connected to a swirl steam nozzle.

[0081] The venturi mixing tube is a prior art, which absorbs air through gas flow, and its structure will not be described in detail.

[0082] Preferably, the axial direction of each venturi mixing tube forms a first angle with the axial direction of the mixing cylinder, and the first angle is 10° to 85°; the axial direction of each venturi mixing tube forms a second angle with the horizontal direction, and the second angle is 10° to 85°. The steam introduced into the swirl steam inlet enters the venturi mixing tube through the swirl steam nozzle, and after being ejected at high speed, a large amount of side air is sucked into the interior of the mixing cylinder to form a swirl, so as to increase the air volume, accelerate combustion, reduce the flame length, and increase the flame rigidity. A control valve is provided on the second steam pipeline to control the swirl speed.

[0083] Preferably, a swirl plate is provided between each two adjacent venturi mixing tubes, and the swirl plate is fixedly connected to the inner wall of the mixing cylinder;

[0084] The swirl blade forms a third angle with the axial direction of the mixing cylinder, the third angle is 10° to 85°, and forms a fourth angle with the horizontal direction, the fourth angle is 10° to 85°. The swirl blade is used to enhance the swirl intensity of the internal mixed gas.

[0085] Example 1

[0086] like Figures 1 to 5 As shown, the present invention provides a torch premixed combined burner, comprising:

[0087] A mixing cylinder 9, the bottom of which is provided with an air inlet 2;

[0088] The external exhaust gas exhaust gas system 13 is used to provide exhaust gas to the outside of the mixing cylinder 9;

[0089] The external steam system 19 is used to provide steam to the gas outlet of the external exhaust gas system 13;

[0090] An internal exhaust gas fuel gas system, the internal exhaust gas fuel gas system is used to provide exhaust gas fuel gas to the interior of the mixing cylinder 9;

[0091] Internal central steam system, the internal steam system is used to provide steam to the gas outlet of the internal exhaust gas system;

[0092] The swirl steam system is used to provide swirl steam to the interior of the mixing cylinder 9.

[0093] In this embodiment, the internal exhaust gas system includes:

[0094] An exhaust gas pipe, one end of which passes through the side wall of the mixing cylinder 9 to the inside thereof, and the other end of the exhaust gas pipe is provided with an exhaust gas discharge inlet 7, which is connected to a first exhaust gas discharge pipeline, and the first exhaust gas discharge pipeline is provided with a control valve;

[0095] An inner double gas ring pipe 14, which is located at the inner lower part of the mixing cylinder 9 and is connected to one end of the exhaust gas pipe;

[0096] A plurality of internal gas nozzles 15 are evenly distributed on the inner double gas annular pipe 14 along the circumferential direction.

[0097] The exhaust gas generated in the production, that is, the combustible gas, enters the first exhaust gas pipeline, and enters the exhaust gas pipe and the inner double gas ring pipe 14 in turn through the exhaust gas inlet 7, and is sprayed into the mixing cylinder 9 through the internal gas nozzle 15 to burn inside the mixing cylinder 9.

[0098] In this embodiment, the height of the inner dual-fuel gas ring pipe 14 inside the mixing cylinder 9 does not exceed half of the height of the mixing cylinder 9 .

[0099] In this embodiment, the external exhaust gas system 13 includes:

[0100] An outer gas ring pipe 10, which is sleeved on the top of the mixing cylinder 9, and is connected to a second exhaust gas discharge pipeline, and a control valve is provided in the second exhaust gas discharge pipeline;

[0101] There are multiple external gas branch pipes 11, the axes of which are perpendicular to the axis of the mixing cylinder 9, and the multiple external gas branch pipes 11 are evenly connected to the external gas ring pipe 10 along the circumferential direction. Each external gas branch pipe 11 is provided with multiple external premixed gas burners 12.

[0102] The combustible gas enters the second exhaust gas pipeline, and then enters the outer gas ring pipe 10 and the outer gas branch pipe 11 in sequence, and is sprayed upward through the external premixed gas burner 12 to be burned above the mixing cylinder 9.

[0103] In this embodiment, the external premixing gas burner 12 is a premixing gas burner. The external premixing gas burner 12 includes a gas nozzle 26 and a premixing burner housing 24. The premixing burner housing 24 is covered on the gas nozzle 26. The gas nozzle 26 is connected to the external gas branch pipe 11. The top of the premixing burner housing 24 is provided with a mixed gas outlet 27. The side wall of the premixing burner housing 24 is provided with a plurality of nozzle side air inlets 25, and the bottom wall is provided with a plurality of nozzle bottom air inlets 23.

[0104] In this embodiment, the external steam system 19 includes:

[0105] An external steam annular pipe 20, which is sleeved on the mixing cylinder 9, and is provided with an external steam inlet, which is communicated with the first steam pipeline;

[0106] A plurality of external steam branch pipes 21, wherein the axial direction of the plurality of external steam branch pipes 21 is arranged along the radial direction of the mixing cylinder 9, the plurality of external steam branch pipes 21 are evenly connected to the external steam ring pipe 20 along the circumferential direction, and each external steam branch pipe 21 is provided with a plurality of external steam spray holes 22;

[0107] The steam of the first steam pipeline enters the external steam ring pipe 20 through the external steam inlet, passes through a plurality of external steam branch pipes 21, and is ejected from the external steam ejection holes 22. The external steam inlet is connected to the first steam pipeline to allow steam to enter. When the steam is ejected, a large amount of air is sucked in to participate in the combustion of the combustible gas ejected from the external premixed gas burner 12.

[0108] The first steam pipeline is provided with a control valve. The air inlet 2 is a cylindrical rotating wall and is fixedly connected to the mixing cylinder 9 by welding.

[0109] In this embodiment, the internal central steam system includes:

[0110] A steam pipe, one end of which passes through the air inlet 2 to the lower part of the mixing cylinder 9, and the other end of the steam pipe is provided with a steam inlet 8, which is connected to the third steam pipeline;

[0111] The internal three-pronged steam pipe 17 is arranged at one end of the steam pipe, a liquid nozzle 16 is arranged at the center of the internal three-pronged steam pipe 17, and a plurality of internal steam spray holes 18 are arranged on the internal three-pronged steam pipe 17.

[0112] The third steam pipeline is used to introduce high-pressure steam, which enters the steam pipe and the internal three-pronged steam pipe 17 in sequence through the steam inlet 8, and is ejected through the internal steam spray hole 18 to participate in the combustion of the combustible gas ejected from the internal gas nozzle 15. The third steam pipeline is provided with a control valve.

[0113] In this embodiment, the internal central steam system further includes a liquid high pressure interface 1, which is detachably connected to the liquid nozzle 16 and connected to the high pressure liquid pipeline. The high pressure liquid pipeline is used to introduce the flammable liquid, and the high pressure liquid enters the liquid high pressure interface 1, is sprayed out by the liquid nozzle 16, and a large amount of air is sucked into the mixing cylinder 9 from the air inlet 2 at the bottom of the mixing cylinder 9, and is ignited through the internal exhaust gas system to promote the combustion of the combustible gas.

[0114] In this embodiment, the cyclone steam system includes:

[0115] A swirl steam annular pipe 4 is sleeved on the lower section of the mixing cylinder 9. A swirl steam inlet 3 is provided at the bottom of the swirl steam annular pipe 4. The swirl steam inlet 3 is connected to the second steam pipeline;

[0116] A plurality of swirl steam nozzles 5, wherein the plurality of swirl steam nozzles 5 are evenly distributed on the swirl steam ring pipe 4;

[0117] There are multiple Venturi mixing tubes 6 , one end of each Venturi mixing tube 6 passes through the side wall of the mixing cylinder 9 to the inside, and the other end of each Venturi mixing tube 6 is connected to a swirl steam nozzle 5 .

[0118] In this embodiment, the axial direction of each Venturi mixing tube 6 forms a first angle with the axial direction of the mixing cylinder 9, and the first angle is 55°; the axial direction of each Venturi mixing tube 6 forms a second angle with the horizontal direction, and the second angle is 55°.

[0119] In this embodiment, a swirl plate 28 is provided between each two adjacent Venturi mixing tubes 6, and the swirl plate 28 is fixedly connected to the inner wall of the mixing cylinder 9; the swirl plate 28 forms a third angle with the axial direction of the mixing cylinder 9, the third angle is 60°, and forms a fourth angle with the horizontal direction, the fourth angle is 60°.

[0120] The embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A torch premixed combined burner, characterized in that: include: A mixing cylinder (9), wherein an air inlet (2) is provided at the bottom of the mixing cylinder (9); An external exhaust gas exhaust gas system (13), the external exhaust gas exhaust gas system (13) is used to provide exhaust gas exhaust gas to the outside of the mixing cylinder (9); An external steam system (19), the external steam system (19) being used to provide steam to a gas outlet of the external exhaust gas system (13); An internal exhaust gas fuel gas system, the internal exhaust gas fuel gas system being used to provide exhaust gas fuel gas to the interior of the mixing cylinder (9); An internal central steam system, the internal central steam system is used to provide steam to the gas ejection point of the internal exhaust gas system; A swirl steam system, the swirl steam system being used to provide swirl steam to the interior of the mixing cylinder (9); The internal central steam system includes: a steam pipe, one end of which passes through the air inlet (2) to the lower part of the mixing cylinder (9), and the other end of which is provided with a steam inlet (8), which is connected to a third steam pipeline; An internal three-pronged steam pipe (17), the internal three-pronged steam pipe (17) being arranged at the one end of the steam pipe, a liquid nozzle (16) being arranged at the center of the internal three-pronged steam pipe (17), and a plurality of internal steam spray holes (18) being arranged on the internal three-pronged steam pipe (17); The internal central steam system further comprises a liquid high pressure interface (1), wherein the liquid high pressure interface (1) is detachably connected to the liquid nozzle (16) and is connected to the high pressure liquid pipeline; The cyclone steam system comprises: A swirl steam annular pipe (4), the swirl steam annular pipe (4) being sleeved on the lower section of the mixing cylinder (9), a swirl steam inlet (3) being provided at the bottom of the swirl steam annular pipe (4), the swirl steam inlet (3) being connected to a second steam pipeline; A plurality of swirl steam nozzles (5), wherein the plurality of swirl steam nozzles (5) are evenly distributed on the swirl steam ring pipe (4); A plurality of Venturi mixing tubes (6), one end of each of the Venturi mixing tubes (6) passes through the side wall of the mixing cylinder (9) to the interior, and the other end of each of the Venturi mixing tubes (6) is connected to one of the swirl steam nozzles (5).

2. The torch premixed combined burner according to claim 1, characterized in that: The internal exhaust gas system includes: An exhaust gas pipe, one end of which passes through the side wall of the mixing cylinder (9) to the interior thereof, and the other end of which is provided with an exhaust gas discharge inlet (7), the exhaust gas discharge inlet (7) being connected to a first exhaust gas discharge pipeline; An inner double fuel gas annular pipe (14), the inner double fuel gas annular pipe (14) being located at the inner lower part of the mixing cylinder (9) and being connected to the one end of the exhaust gas pipe; A plurality of internal gas nozzles (15), wherein the plurality of internal gas nozzles (15) are evenly distributed on the inner double gas ring pipe (14) along a circumferential direction.

3. The torch premixed combined burner according to claim 2, characterized in that: The external exhaust gas system (13) comprises: An outer gas ring pipe (10), the outer gas ring pipe (10) is sleeved on the top of the mixing cylinder (9), and the outer gas ring pipe (10) is connected to a second exhaust gas pipeline; A plurality of external gas branch pipes (11), wherein the axial direction of the plurality of external gas branch pipes (11) is perpendicular to the axial direction of the mixing cylinder (9), and the plurality of external gas branch pipes (11) are evenly connected to the external gas ring pipe (10) along the circumferential direction, and each of the external gas branch pipes (11) is provided with a plurality of external premixed gas burners (12).

4. The torch premixed combined burner according to claim 3, characterized in that: The external premixing gas burner (12) comprises a gas nozzle (26) and a premixing burner shell (24), wherein the premixing burner shell (24) is covered on the gas nozzle (26), the gas nozzle (26) is connected to the external gas branch pipe (11), a mixed gas outlet (27) is provided at the top of the premixing burner shell (24), a plurality of nozzle side air inlets (25) are provided on the side wall of the premixing burner shell (24), and a plurality of nozzle bottom air inlets (23) are provided on the bottom wall.

5. The torch premixed combined burner according to claim 3, characterized in that: The external steam system (19) comprises: An external steam annular pipe (20), the external steam annular pipe (20) being sleeved on the mixing cylinder (9), the external steam annular pipe (20) being provided with an external steam inlet, the external steam inlet being in communication with the first steam pipeline; A plurality of external steam branch pipes (21), wherein the axial direction of the plurality of external steam branch pipes (21) is arranged along the radial direction of the mixing cylinder (9), the plurality of external steam branch pipes (21) are evenly connected to the external steam ring pipe (20) along the circumferential direction, and each of the external steam branch pipes (21) is provided with a plurality of external steam spray holes (22).

6. The torch premixed combined burner according to claim 1, characterized in that: The axial direction of each Venturi mixing tube (6) forms a first angle with the axial direction of the mixing cylinder (9), and the first angle is 10° to 85°; the axial direction of each Venturi mixing tube (6) forms a second angle with the horizontal direction, and the second angle is 10° to 85°.

7. The torch premixed combined burner according to claim 1, characterized in that: A swirl sheet (28) is provided between each two adjacent Venturi mixing tubes (6), and the swirl sheet (28) is connected to the inner wall of the mixing cylinder (9); The swirl blade (28) forms a third angle with the axial direction of the mixing cylinder (9), the third angle being 10° to 85°, and forms a fourth angle with the horizontal direction, the fourth angle being 10° to 85°.

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